Snowy, if your rifle shoots low with military ammo, then you need not change your foresight block. You have the option of

1. raising your rear sight a few clicks, and make a note of the adjustment at each distance.
2. File down your sight blade a little more
3. Try other ammo. This can make a big difference to POI.

If it shoots high, get a selection of sight blades from Springfield Sporters and file down to suit.